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qemu-e2k/sdl.c
Dustin Kirkland 0ca9f8a42d offer right-ctrl as a grab option 
Add support for -ctrl-grab to use the right-ctrl button to grab/release
the mouse in SDL.

The multi-button ctrl-alt and ctrl-alt-shift grab buttons present an
accessibility problem to users who cannot press more than one button
at a time.

https://bugs.edge.launchpad.net/ubuntu/+source/qemu-kvm/+bug/237635

Signed-off-by: Dustin Kirkland <kirkland@canonical.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-06 14:36:09 -05:00

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/*
* QEMU SDL display driver
*
* Copyright (c) 2003 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <SDL.h>
#include <SDL_syswm.h>
#ifndef _WIN32
#include <signal.h>
#endif
#include "qemu-common.h"
#include "console.h"
#include "sysemu.h"
#include "x_keymap.h"
#include "sdl_zoom.h"
static DisplayChangeListener *dcl;
static SDL_Surface *real_screen;
static SDL_Surface *guest_screen = NULL;
static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
static int last_vm_running;
static int gui_saved_grab;
static int gui_fullscreen;
static int gui_noframe;
static int gui_key_modifier_pressed;
static int gui_keysym;
static int gui_fullscreen_initial_grab;
static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
static uint8_t modifiers_state[256];
static int width, height;
static SDL_Cursor *sdl_cursor_normal;
static SDL_Cursor *sdl_cursor_hidden;
static int absolute_enabled = 0;
static int guest_cursor = 0;
static int guest_x, guest_y;
static SDL_Cursor *guest_sprite = NULL;
static uint8_t allocator;
static SDL_PixelFormat host_format;
static int scaling_active = 0;
static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
{
// printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
SDL_Rect rec;
rec.x = x;
rec.y = y;
rec.w = w;
rec.h = h;
if (guest_screen) {
if (!scaling_active) {
SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
} else {
if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
fprintf(stderr, "Zoom blit failed\n");
exit(1);
}
}
}
SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
}
static void sdl_setdata(DisplayState *ds)
{
SDL_Rect rec;
rec.x = 0;
rec.y = 0;
rec.w = real_screen->w;
rec.h = real_screen->h;
if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
ds->surface->pf.rmask, ds->surface->pf.gmask,
ds->surface->pf.bmask, ds->surface->pf.amask);
}
static void do_sdl_resize(int new_width, int new_height, int bpp)
{
int flags;
// printf("resizing to %d %d\n", w, h);
flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL|SDL_RESIZABLE;
if (gui_fullscreen)
flags |= SDL_FULLSCREEN;
if (gui_noframe)
flags |= SDL_NOFRAME;
width = new_width;
height = new_height;
real_screen = SDL_SetVideoMode(width, height, bpp, flags);
if (!real_screen) {
fprintf(stderr, "Could not open SDL display\n");
exit(1);
}
}
static void sdl_resize(DisplayState *ds)
{
if (!allocator) {
if (!scaling_active)
do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
sdl_setdata(ds);
} else {
if (guest_screen != NULL) {
SDL_FreeSurface(guest_screen);
guest_screen = NULL;
}
}
}
static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
{
PixelFormat qemu_pf;
memset(&qemu_pf, 0x00, sizeof(PixelFormat));
qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
qemu_pf.rmask = sdl_pf->Rmask;
qemu_pf.gmask = sdl_pf->Gmask;
qemu_pf.bmask = sdl_pf->Bmask;
qemu_pf.amask = sdl_pf->Amask;
qemu_pf.rshift = sdl_pf->Rshift;
qemu_pf.gshift = sdl_pf->Gshift;
qemu_pf.bshift = sdl_pf->Bshift;
qemu_pf.ashift = sdl_pf->Ashift;
qemu_pf.rbits = 8 - sdl_pf->Rloss;
qemu_pf.gbits = 8 - sdl_pf->Gloss;
qemu_pf.bbits = 8 - sdl_pf->Bloss;
qemu_pf.abits = 8 - sdl_pf->Aloss;
qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
return qemu_pf;
}
static DisplaySurface* sdl_create_displaysurface(int width, int height)
{
DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
if (surface == NULL) {
fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
exit(1);
}
surface->width = width;
surface->height = height;
if (scaling_active) {
if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
surface->linesize = width * 4;
surface->pf = qemu_default_pixelformat(32);
} else {
surface->linesize = width * host_format.BytesPerPixel;
surface->pf = sdl_to_qemu_pixelformat(&host_format);
}
#ifdef HOST_WORDS_BIGENDIAN
surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
#else
surface->flags = QEMU_ALLOCATED_FLAG;
#endif
surface->data = (uint8_t*) qemu_mallocz(surface->linesize * surface->height);
return surface;
}
if (host_format.BitsPerPixel == 16)
do_sdl_resize(width, height, 16);
else
do_sdl_resize(width, height, 32);
surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
surface->linesize = real_screen->pitch;
surface->data = real_screen->pixels;
#ifdef HOST_WORDS_BIGENDIAN
surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
#else
surface->flags = QEMU_REALPIXELS_FLAG;
#endif
allocator = 1;
return surface;
}
static void sdl_free_displaysurface(DisplaySurface *surface)
{
allocator = 0;
if (surface == NULL)
return;
if (surface->flags & QEMU_ALLOCATED_FLAG)
qemu_free(surface->data);
qemu_free(surface);
}
static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
{
sdl_free_displaysurface(surface);
return sdl_create_displaysurface(width, height);
}
/* generic keyboard conversion */
#include "sdl_keysym.h"
static kbd_layout_t *kbd_layout = NULL;
static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
{
int keysym;
/* workaround for X11+SDL bug with AltGR */
keysym = ev->keysym.sym;
if (keysym == 0 && ev->keysym.scancode == 113)
keysym = SDLK_MODE;
/* For Japanese key '\' and '|' */
if (keysym == 92 && ev->keysym.scancode == 133) {
keysym = 0xa5;
}
return keysym2scancode(kbd_layout, keysym);
}
/* specific keyboard conversions from scan codes */
#if defined(_WIN32)
static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
{
return ev->keysym.scancode;
}
#else
#if defined(SDL_VIDEO_DRIVER_X11)
#include <X11/XKBlib.h>
static int check_for_evdev(void)
{
SDL_SysWMinfo info;
XkbDescPtr desc = NULL;
int has_evdev = 0;
char *keycodes = NULL;
SDL_VERSION(&info.version);
if (!SDL_GetWMInfo(&info)) {
return 0;
}
desc = XkbGetKeyboard(info.info.x11.display,
XkbGBN_AllComponentsMask,
XkbUseCoreKbd);
if (desc && desc->names) {
keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
if (keycodes == NULL) {
fprintf(stderr, "could not lookup keycode name\n");
} else if (strstart(keycodes, "evdev", NULL)) {
has_evdev = 1;
} else if (!strstart(keycodes, "xfree86", NULL)) {
fprintf(stderr, "unknown keycodes `%s', please report to "
"qemu-devel@nongnu.org\n", keycodes);
}
}
if (desc) {
XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
}
if (keycodes) {
XFree(keycodes);
}
return has_evdev;
}
#else
static int check_for_evdev(void)
{
return 0;
}
#endif
static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
{
int keycode;
static int has_evdev = -1;
if (has_evdev == -1)
has_evdev = check_for_evdev();
keycode = ev->keysym.scancode;
if (keycode < 9) {
keycode = 0;
} else if (keycode < 97) {
keycode -= 8; /* just an offset */
} else if (keycode < 158) {
/* use conversion table */
if (has_evdev)
keycode = translate_evdev_keycode(keycode - 97);
else
keycode = translate_xfree86_keycode(keycode - 97);
} else if (keycode == 208) { /* Hiragana_Katakana */
keycode = 0x70;
} else if (keycode == 211) { /* backslash */
keycode = 0x73;
} else {
keycode = 0;
}
return keycode;
}
#endif
static void reset_keys(void)
{
int i;
for(i = 0; i < 256; i++) {
if (modifiers_state[i]) {
if (i & 0x80)
kbd_put_keycode(0xe0);
kbd_put_keycode(i | 0x80);
modifiers_state[i] = 0;
}
}
}
static void sdl_process_key(SDL_KeyboardEvent *ev)
{
int keycode, v;
if (ev->keysym.sym == SDLK_PAUSE) {
/* specific case */
v = 0;
if (ev->type == SDL_KEYUP)
v |= 0x80;
kbd_put_keycode(0xe1);
kbd_put_keycode(0x1d | v);
kbd_put_keycode(0x45 | v);
return;
}
if (kbd_layout) {
keycode = sdl_keyevent_to_keycode_generic(ev);
} else {
keycode = sdl_keyevent_to_keycode(ev);
}
switch(keycode) {
case 0x00:
/* sent when leaving window: reset the modifiers state */
reset_keys();
return;
case 0x2a: /* Left Shift */
case 0x36: /* Right Shift */
case 0x1d: /* Left CTRL */
case 0x9d: /* Right CTRL */
case 0x38: /* Left ALT */
case 0xb8: /* Right ALT */
if (ev->type == SDL_KEYUP)
modifiers_state[keycode] = 0;
else
modifiers_state[keycode] = 1;
break;
case 0x45: /* num lock */
case 0x3a: /* caps lock */
/* SDL does not send the key up event, so we generate it */
kbd_put_keycode(keycode);
kbd_put_keycode(keycode | 0x80);
return;
}
/* now send the key code */
if (keycode & 0x80)
kbd_put_keycode(0xe0);
if (ev->type == SDL_KEYUP)
kbd_put_keycode(keycode | 0x80);
else
kbd_put_keycode(keycode & 0x7f);
}
static void sdl_update_caption(void)
{
char win_title[1024];
char icon_title[1024];
const char *status = "";
if (!vm_running)
status = " [Stopped]";
else if (gui_grab) {
if (alt_grab)
status = " - Press Ctrl-Alt-Shift to exit grab";
else if (ctrl_grab)
status = " - Press Right-Ctrl to exit grab";
else
status = " - Press Ctrl-Alt to exit grab";
}
if (qemu_name) {
snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
} else {
snprintf(win_title, sizeof(win_title), "QEMU%s", status);
snprintf(icon_title, sizeof(icon_title), "QEMU");
}
SDL_WM_SetCaption(win_title, icon_title);
}
static void sdl_hide_cursor(void)
{
if (!cursor_hide)
return;
if (kbd_mouse_is_absolute()) {
SDL_ShowCursor(1);
SDL_SetCursor(sdl_cursor_hidden);
} else {
SDL_ShowCursor(0);
}
}
static void sdl_show_cursor(void)
{
if (!cursor_hide)
return;
if (!kbd_mouse_is_absolute()) {
SDL_ShowCursor(1);
if (guest_cursor &&
(gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
SDL_SetCursor(guest_sprite);
else
SDL_SetCursor(sdl_cursor_normal);
}
}
static void sdl_grab_start(void)
{
if (guest_cursor) {
SDL_SetCursor(guest_sprite);
if (!kbd_mouse_is_absolute() && !absolute_enabled)
SDL_WarpMouse(guest_x, guest_y);
} else
sdl_hide_cursor();
if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
gui_grab = 1;
sdl_update_caption();
} else
sdl_show_cursor();
}
static void sdl_grab_end(void)
{
SDL_WM_GrabInput(SDL_GRAB_OFF);
gui_grab = 0;
sdl_show_cursor();
sdl_update_caption();
}
static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
{
int buttons;
buttons = 0;
if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
buttons |= MOUSE_EVENT_LBUTTON;
if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
buttons |= MOUSE_EVENT_RBUTTON;
if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
buttons |= MOUSE_EVENT_MBUTTON;
if (kbd_mouse_is_absolute()) {
if (!absolute_enabled) {
sdl_hide_cursor();
if (gui_grab) {
sdl_grab_end();
}
absolute_enabled = 1;
}
dx = x * 0x7FFF / (width - 1);
dy = y * 0x7FFF / (height - 1);
} else if (absolute_enabled) {
sdl_show_cursor();
absolute_enabled = 0;
} else if (guest_cursor) {
x -= guest_x;
y -= guest_y;
guest_x += x;
guest_y += y;
dx = x;
dy = y;
}
kbd_mouse_event(dx, dy, dz, buttons);
}
static void toggle_full_screen(DisplayState *ds)
{
gui_fullscreen = !gui_fullscreen;
if (gui_fullscreen) {
scaling_active = 0;
gui_saved_grab = gui_grab;
sdl_grab_start();
} else {
if (!gui_saved_grab)
sdl_grab_end();
}
vga_hw_invalidate();
vga_hw_update();
}
static void sdl_refresh(DisplayState *ds)
{
SDL_Event ev1, *ev = &ev1;
int mod_state;
int buttonstate = SDL_GetMouseState(NULL, NULL);
if (last_vm_running != vm_running) {
last_vm_running = vm_running;
sdl_update_caption();
}
vga_hw_update();
SDL_EnableUNICODE(!is_graphic_console());
while (SDL_PollEvent(ev)) {
switch (ev->type) {
case SDL_VIDEOEXPOSE:
sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
break;
case SDL_KEYDOWN:
case SDL_KEYUP:
if (ev->type == SDL_KEYDOWN) {
if (alt_grab) {
mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
(gui_grab_code | KMOD_LSHIFT);
} else if (ctrl_grab) {
mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
} else {
mod_state = (SDL_GetModState() & gui_grab_code) ==
gui_grab_code;
}
gui_key_modifier_pressed = mod_state;
if (gui_key_modifier_pressed) {
int keycode;
keycode = sdl_keyevent_to_keycode(&ev->key);
switch(keycode) {
case 0x21: /* 'f' key on US keyboard */
toggle_full_screen(ds);
gui_keysym = 1;
break;
case 0x16: /* 'u' key on US keyboard */
scaling_active = 0;
sdl_resize(ds);
vga_hw_invalidate();
vga_hw_update();
break;
case 0x02 ... 0x0a: /* '1' to '9' keys */
/* Reset the modifiers sent to the current console */
reset_keys();
console_select(keycode - 0x02);
if (!is_graphic_console()) {
/* display grab if going to a text console */
if (gui_grab)
sdl_grab_end();
}
gui_keysym = 1;
break;
default:
break;
}
} else if (!is_graphic_console()) {
int keysym;
keysym = 0;
if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
switch(ev->key.keysym.sym) {
case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
default: break;
}
} else {
switch(ev->key.keysym.sym) {
case SDLK_UP: keysym = QEMU_KEY_UP; break;
case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
case SDLK_END: keysym = QEMU_KEY_END; break;
case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
default: break;
}
}
if (keysym) {
kbd_put_keysym(keysym);
} else if (ev->key.keysym.unicode != 0) {
kbd_put_keysym(ev->key.keysym.unicode);
}
}
} else if (ev->type == SDL_KEYUP) {
if (!alt_grab) {
mod_state = (ev->key.keysym.mod & gui_grab_code);
} else {
mod_state = (ev->key.keysym.mod &
(gui_grab_code | KMOD_LSHIFT));
}
if (!mod_state) {
if (gui_key_modifier_pressed) {
gui_key_modifier_pressed = 0;
if (gui_keysym == 0) {
/* exit/enter grab if pressing Ctrl-Alt */
if (!gui_grab) {
/* if the application is not active,
do not try to enter grab state. It
prevents
'SDL_WM_GrabInput(SDL_GRAB_ON)'
from blocking all the application
(SDL bug). */
if (SDL_GetAppState() & SDL_APPACTIVE)
sdl_grab_start();
} else {
sdl_grab_end();
}
/* SDL does not send back all the
modifiers key, so we must correct it */
reset_keys();
break;
}
gui_keysym = 0;
}
}
}
if (is_graphic_console() && !gui_keysym)
sdl_process_key(&ev->key);
break;
case SDL_QUIT:
if (!no_quit)
qemu_system_shutdown_request();
break;
case SDL_MOUSEMOTION:
if (gui_grab || kbd_mouse_is_absolute() ||
absolute_enabled) {
sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
ev->motion.x, ev->motion.y, ev->motion.state);
}
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
{
SDL_MouseButtonEvent *bev = &ev->button;
if (!gui_grab && !kbd_mouse_is_absolute()) {
if (ev->type == SDL_MOUSEBUTTONDOWN &&
(bev->button == SDL_BUTTON_LEFT)) {
/* start grabbing all events */
sdl_grab_start();
}
} else {
int dz;
dz = 0;
if (ev->type == SDL_MOUSEBUTTONDOWN) {
buttonstate |= SDL_BUTTON(bev->button);
} else {
buttonstate &= ~SDL_BUTTON(bev->button);
}
#ifdef SDL_BUTTON_WHEELUP
if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
dz = -1;
} else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
dz = 1;
}
#endif
sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
}
}
break;
case SDL_ACTIVEEVENT:
if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
!ev->active.gain && !gui_fullscreen_initial_grab) {
sdl_grab_end();
}
if (ev->active.state & SDL_APPACTIVE) {
if (ev->active.gain) {
/* Back to default interval */
dcl->gui_timer_interval = 0;
dcl->idle = 0;
} else {
/* Sleeping interval */
dcl->gui_timer_interval = 500;
dcl->idle = 1;
}
}
break;
case SDL_VIDEORESIZE:
{
SDL_ResizeEvent *rev = &ev->resize;
int bpp = real_screen->format->BitsPerPixel;
if (bpp != 16 && bpp != 32)
bpp = 32;
do_sdl_resize(rev->w, rev->h, bpp);
scaling_active = 1;
if (!is_buffer_shared(ds->surface)) {
ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
dpy_resize(ds);
}
vga_hw_invalidate();
vga_hw_update();
break;
}
default:
break;
}
}
}
static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
{
SDL_Rect dst = { x, y, w, h };
SDL_FillRect(real_screen, &dst, c);
}
static void sdl_mouse_warp(int x, int y, int on)
{
if (on) {
if (!guest_cursor)
sdl_show_cursor();
if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
SDL_SetCursor(guest_sprite);
if (!kbd_mouse_is_absolute() && !absolute_enabled)
SDL_WarpMouse(x, y);
}
} else if (gui_grab)
sdl_hide_cursor();
guest_cursor = on;
guest_x = x, guest_y = y;
}
static void sdl_mouse_define(int width, int height, int bpp,
int hot_x, int hot_y,
uint8_t *image, uint8_t *mask)
{
uint8_t sprite[256], *line;
int x, y, dst, bypl, src = 0;
if (guest_sprite)
SDL_FreeCursor(guest_sprite);
memset(sprite, 0, 256);
bypl = ((width * bpp + 31) >> 5) << 2;
for (y = 0, dst = 0; y < height; y ++, image += bypl) {
line = image;
for (x = 0; x < width; x ++, dst ++) {
switch (bpp) {
case 32:
src = *(line ++); src |= *(line ++); src |= *(line ++); line++;
break;
case 24:
src = *(line ++); src |= *(line ++); src |= *(line ++);
break;
case 16:
case 15:
src = *(line ++); src |= *(line ++);
break;
case 8:
src = *(line ++);
break;
case 4:
src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
break;
case 2:
src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
break;
case 1:
src = 1 & (line[x >> 3] >> (x & 7));
break;
}
if (!src)
sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
}
}
guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
if (guest_cursor &&
(gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
SDL_SetCursor(guest_sprite);
}
static void sdl_cleanup(void)
{
if (guest_sprite)
SDL_FreeCursor(guest_sprite);
SDL_QuitSubSystem(SDL_INIT_VIDEO);
}
void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
{
int flags;
uint8_t data = 0;
DisplayAllocator *da;
const SDL_VideoInfo *vi;
#if defined(__APPLE__)
/* always use generic keymaps */
if (!keyboard_layout)
keyboard_layout = "en-us";
#endif
if(keyboard_layout) {
kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
if (!kbd_layout)
exit(1);
}
if (no_frame)
gui_noframe = 1;
flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
if (SDL_Init (flags)) {
fprintf(stderr, "Could not initialize SDL - exiting\n");
exit(1);
}
vi = SDL_GetVideoInfo();
host_format = *(vi->vfmt);
dcl = qemu_mallocz(sizeof(DisplayChangeListener));
dcl->dpy_update = sdl_update;
dcl->dpy_resize = sdl_resize;
dcl->dpy_refresh = sdl_refresh;
dcl->dpy_setdata = sdl_setdata;
dcl->dpy_fill = sdl_fill;
ds->mouse_set = sdl_mouse_warp;
ds->cursor_define = sdl_mouse_define;
register_displaychangelistener(ds, dcl);
da = qemu_mallocz(sizeof(DisplayAllocator));
da->create_displaysurface = sdl_create_displaysurface;
da->resize_displaysurface = sdl_resize_displaysurface;
da->free_displaysurface = sdl_free_displaysurface;
if (register_displayallocator(ds, da) == da) {
DisplaySurface *surf;
surf = sdl_create_displaysurface(ds_get_width(ds), ds_get_height(ds));
defaultallocator_free_displaysurface(ds->surface);
ds->surface = surf;
dpy_resize(ds);
}
sdl_update_caption();
SDL_EnableKeyRepeat(250, 50);
gui_grab = 0;
sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
sdl_cursor_normal = SDL_GetCursor();
atexit(sdl_cleanup);
if (full_screen) {
gui_fullscreen = 1;
gui_fullscreen_initial_grab = 1;
sdl_grab_start();
}
}
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